Wrench



Nov. 24, 1931. J. MONZROILL WRENCH Filed Feb. 18, 1929 lzayjda By% 2:

Attorneys Patented Nov. 24, 1931 JEFIROY oNzno'LL, or nALHoUs n, nnunswiox; CANADA wnnnon if .i 1

Application filed February 18, 1929, Serial in. an and in caaaa May 21,192; v f

The present invention relates to improve.-

Inents in the construction of Wrenches and has a for its primary object the provision of a Wrench which shall be capable of quick and accurate adjustment.

Another object of the invention is the pro vision of a wrench of the above character designed to tightly engage a pipe or similar object.

A further object of the invention is the provision of a wrench of the above character which will be relatively simple and durable of construction and which can be conveniently operated. j Other objects and advantages of the invention will become apparent as the description progresses. V r f In the accompanying drawings forming a part of this specification and in which like 20 reference characters are employed to desi nate corresponding parts throughout the same: i r Figure 1 is a side elevational view of th wrench, V

Figure 2 is alongitudinal sectional View through the same,

Figure 3 is a transverse sectlon taken on the.

line 3- 3 of Figure 1,

Figure 4 is a similar view'taken on the line 30 4-4 of Figure 1, and

Figure 5 is a similar section taken on the line 55 of Figure 2.

Referring to the drawlngs, wherein for the purpose of illustration is shown a preferred '1 35 embodiment of the invention, the numeral generally designates an elongated tapered bar.

having an upstanding U-shaped casing 11 formed on its forward end. The forward extremity of the bar 10 is also formed with a fixed jaw 12, preferably serrated at its outer work engaging face. On its upper forward surface; the bar 10 is formed with transversely opposed longitudinal fianges13 forming therebetween a longitudinal groove.

Slidably fitted through the casing or frame 11, for longitudinal adjustment, is a shank 161 formed at its outer end with a laterally projecting 15 serrated on its inner face and adapted to co-operate with the fixed jaw 50 12. The upper side of the shank 1 1 is pref work' engaging position.

erably serrated to form a toothed -rafck 16, theipurpose of which will be later described. Pivotally connected withlthe-rearor 'inner end of the shank leis a lever '17 'forrned With -a raisedlhead 18 adapted toreceive the 5! inner endof the shank. The shankis asv sociated with the lever head through medium of atransverse pivotpin 19,:as shown H to'advantage in Figure flhe'loweripon tion oftheheadlffi isfformed with an offset 69 cam 20' projecting into the groo'veformed between the i flanges 13' and rockable thereon; The-inner p ortiojii of thehe ad isfoitm'e'd with an upwardly-directed shoulder21"de signed to engage thelower end ofthe shank 14in gripping positioni I l l Pivoted in" the upper'portion of thef fra nie 11, to engage the toothed rack of the shank; is a crescent shaped pawl'22 having the; end portions projecting downwardly toward the shank; The-outer orrearend of-theypawl is: normally urged toadownward rack engag ing position by Kleitllsbfa double spring 23, as shown to advantage in Figure '2. The op posed for forward end of the 'pawl carries an arc'uate'fhandle 24 projecting outwardlyof the 'ffraniefor'selectively",disengaging the pawl fromthe shank. H

The lever17's provided-with n lateral? bevelled cutting rib 25' designed to co-operate 80 with one of the flanges 13 tdforma-cutting implement, as shown to advantage'-in"Figure-5." HM

In operation thelever 17 isinitially elevate-dp as illustrated in-Figure 1, and-the handle 94 of the pawl is depressed to disengage the pawl from therack 16 of the shank. 1 p g i v The jaw carrying shank and lever 17 are then actuated longitudinallyto pipe or other is then released so that the rear edge of the pawl engages the rack 16 to prevent longitudinal extension of the shank. The lever 17 is then swungiinwardly toward the" e X'tenl sion of the bar 10, swinging about thecam 95 20 as afulcrumi. This action results in tiltagainst the worlnl Thus, the wrench can be 1m? The pawl lever 24 v conveniently manipulated with one hand and effectively grip a pipe or other object. 7 It is to be understood that the form of my invention herein shown and described is to Y 7 5 be taken as a preferred example of the same,

and that various changes as to the shape, size, and arrangement of parts may be resorted to Without departing from thespirit of the invention or the scope of the subjoined claims.

' 7 Having thus described my invention, I

claim: p 1, 1. A wrench including an elongated bar I,

having a jaw formed on its forward endya f laterallyextending frame formed on the bar,

7 a shank slidahle through said frame longi tudinally' on the bar, ajaw formed on the forward end of the shank, a lever pivoted v to the shank adaptedto tilt the same'in gripping position, a pivoted pawlj zmounted" in an the outer portion of the frame having one endengageable with the shank to look the same against extended movement, meansresiliently urging the pawl into shank engaging position, and means for manually tilting 1,3 the pawl out of engagement withfthe shank. 2 In a. wrenchof the character described, thecombination of a body bar havingfa fixed jaw formed onone end thereof, a guide frame -mountedon the body ,bar, a'shank slidable through the guide frame formed with teeth "in its outer edge, a jaw formed on the for; 7 Ward end of the shank adapted to co-operate with the fixed jaw of the body bar, alever pivotally Connected to the inner end of the' ill '35 shank, a cam formed on the innerend of the lever rockable on the inner side of the body 7 v barto tilt the shank in gripping position, and a pivoted pawl mounted in the outer portion Y of'the frame having means for normally urging one end thereof into contactjwiththe teeth in theshank, the said pawl being ar-' y ranged'sothat the s'hankwill be urged more intimately therewith when the shank is tilted into gripping; position to prevent sliding= movementv of the shank. I Y

' In wit-ness whereof lhave hereuntopset I 'my hand; 1 a I 7 1 J'EFFROY MONZROLL. 

